Motorcycle helmet



FIG. 1 is a top plan view of the motorcycle helmet showing our new design;

FIG. 2 is a right side elevational view as seen when worn;

FIG. 3 is a left side elevational view as seen when worn;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof; and

FIG. 7 is a front perspective view thereof. 

The ornamental design for a motorcycle helmet, as shown and described. 